Insect-destroyer.



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INSEGT DESTROYER.

` -APPLIGATION FILED 901,348.

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ELI F. KAUFFMAN, OF YORK, PENNSYLVANIA.

INSECTDESTROYER.

Specification of Letters Patent.

Patented Oct. 20, 1908.

Application filed January 26, 1907. Y Serial No. 354,340.

To all whom it may concern:

Be it known that I, ELI F. KAUFFMAN, a citizen of the United States,residing at York, in the county of York and State of Pennsylvania, haveinvented new and useful Improvements in Insect-Destroyers, of which thefollowing is a specification.

This invention relates to spraying devices or atomizers of the typedisclosed in my prior application, Serial No. 302,699, filed Feb. 211,1906, and which are designed especially for use in spraying trees,plants or the like with liquid to destroy insects.

The device embodies in its organization a tank or reservoir adapted toreceive the liquid to be sprayed and containing an agitating member,said tank, which is equipped with suitable spraying nozzles, beingdesigned for connection with a gas cylinder from which gas is suppliedto the liquid contents of the tank.

The present invention has for its object to provide a straining devicein the pipe that supplies the germicide liquid to the spraying nozzle,in connection with means for conveniently cleaning the strainer, asoccasion ronires.

ith these and other objects in view, the invention comprises the novelfeatures of construction and combination of parts more fully hereinafterdescribed.

In the accompanying drawing, there is shown a side elevation partly insection of a spraying apparatus embodying the invention.

Referring to the drawing, 1 designates a vessel or tank provided with acover 2 and containing a vertically movable dome-shaped agitator` 3connected by a pitman rod 4l with the crank portion 5, of atransversely-extending rotary crank shaft- 6 journaled in suitablebearings in the tank and provided at one end exterior of the tank withan operating handle 7, there being tapped through a suitable opening inthe cover 2, an inlet pipe 8 equipped with a pressure-gage 9 and havinga branch pipe 10 and blow-off nozzle 11 controlled respectively bysuitable valves 12. The pipe 10 is adapted in practice to be connectedby a suitable tube or duct with a carbonio acid gas container (notshown), as in the instance of my prior apparatus.

The foregoing parts are preferably similar in construction and operationto the corresponding parts as disclosed in the abovenoted application,but may, of course, be of other suitable or preferred construction andoperation.

Coupled to the tank 1 and for communication therewith at the pointadjacent its lower end is a discharge pipe 13 provided between its endswith a vertically uprising portion or section 14. This section carriesat its upper end a horizontal tubular portion or casing 15 closed at itsrear end and having tapped into its forward end a pipe section 16whichopens at its rear end into the casing. To the forward end of the pipesection 16 is coupled a flexible spraying tube 17 provided at its freeend with a spraying nozzle 18, there being arranged in the pipe section16 at a point near its outer end a controlling valve 19. Arranged in thedischarge pipe 13, which terminates at its outer end in a discharge cock20, is a pair of controlling valves 21 and 22 disposed respectively atopposite sides of the point of connection of pipe 14: with the dischargepipe. v

Connected at its upper end for communication with the tank 1 at a pointabove the maximum level of the liquid therein is a branch pipe or duct23 provided between its ends with a controlling valve 24 and having itslower end coupled to and for communication with the pipe section 16 at apoint in rear of the valve 19, while arranged in the casing 15, to coverthe opening or port leading to the pipe section 16, is a perforateshield or strainer 25 preferably of conical form as shown, and havingits larger end arranged to bear against the front wall of the casing,the shield being held in place by means of a pressure spring 26 of theform and arrangement, as shown.

Coupled to the lower end of the inlet pipe 8 and disposed within theupper portion of the tank 1 is a perforate straining member or nozzle 27provided with numerous openings or perforations 28, through which thegas will flow during its passage from the pipe 8 into the tank.

In practice, the gas is, by opening the valve 12, admitted through thepipe 8 into the upper portion of the tank which is previously filledwith liquid to the level indicated by the dotted line in the drawing, itbeing understood that the tank is completely charged with gas above theliquid. By operating the agitator 3, through the medium of the crankshaft 6, the liquid becomes charged or impregnated with the gas. Byclosing the valves 21 and 24; and opening the valves 19 and 22, theliquid will under pressure of the gas, be forced outward through thespraying pipe 17 for distribu-L and prevented from impinging upon andagitating the liquid contents of the tank.

During the spraying action, the liquid How ing from the tank passesthrough the strainer 25 before entering the tube 17 and in the event ofsaid strainer becoming fouled. and choked, and thus affecting properiiow of the liquid, the strainer 25 may be readily cleaned by closingvalves 19 and 22 and opening valves 2l and 24, thus allowing the gasfrom the upper portion of the tank to flow under pressure through thebranch pipe 23 backward through the strainer and thence outward throughthe pipe section 14 and cock 20, whereby the impurities will be blownoff the strainer and out of the pipes, as will be readily understood.

In case the nozzle should become clogged, it can be cleaned bypermitting the gas to flow therethrough by opening the valves 24- and 19and closing valve 22. I

, I-Iaving thus described the invention, what I claim is In a sprayingapparatus, the combination of a gas-tight vessel adapted to contain agerinicide liquid, means above the normal level of the liquid forsupplying gas under pressure thereto for forcing liquid from the vesselduring the spraying operation, an agitating means within the vessel, apipe connected with the vessel adjacent the bottom thereof to receiveliquid, a cut-off valve in the pipe, a drain valve connected with thepipe, acasing connected with the pipe at a point intermediate thevalves, a strainer Vin the casing, a pipe connected with 4the casing toreceive strained liquid therefrom, a cut-off valve in the last-mentionedpipe, a spraying device connected with the lastmentioned valve, aconduit connected with the vessel at a point above the normal liquidlevel and with the second-mentioned pipe at a point between the secondcut-off valve and said casing, a valve in the said conduit for admittinggas through the casing in reverse direction to the flow of liquid whenthe cutoff valves are closed and the drain valve is open.

In testimony whereof, I aiix my signature in presence of two witnesses.

ELI F. 'KAUFFMAN Witnesses I HERBERT HILL,

JACOB E.` WEAVER.

